Cynoglossum is a genus of small-flowered plants in the family Boraginaceae (borage family). It includes 81 species native to Eurasia, Africa, New Guinea, and Australia.
Cynoglossum officinale, the common hound's-tongue, is a native of Asia, Africa, and Europe. It has been introduced into North America, and it is considered to be a troublesome weed because its burs stick to the wool of sheep and to other animals. Ingestion of this plant can also lead to photosensitivity in grazing animals.
, there are 81 accepted species in the genus: